Time and Timing Servers

Thu Jul 11 14:50:48 UTC 2019

Isn't a major problem with CDMA-based sources that the networks they depend on are getting shut down? 

----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 

----- Original Message -----

From: "Ethan O'Toole" <telmnstr at 757.org> 
To: "Mike Hammett" <nanog at ics-il.net> 
Cc: nanog at nanog.org 
Sent: Thursday, July 11, 2019 9:46:24 AM 
Subject: Re: Time and Timing Servers 

> I'm looking for a device that can receive GPS inside a building without 
> the assistance of an external antenna (Frontier says they no longer 
> allow external antenna), will provide traditional NTP services, and will 
> provide a timing signal that my Metaswitch can work with. 

GPS inside a building probably isn't going to work unless you have the 
antenna up against a window. 

Look at CDMA NTP Servers like the EndRun Sonoma. They use the cellular 
network which requires accurate timing and has good building penetration. 

- Ethan O'Toole 

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